drm/amd/display: Update DMCU versioning mechanism

[Why]
Current date based versioning doesn't tell us about feature version
and build version, and is not useful for debug.

[How]
Add versioning based on feature and build
Signed-off-by: Josip Pavic <Josip.Pavic@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c

@@ -331,10 +331,10 @@ static void dcn10_get_dmcu_version(struct dmcu *dmcu)
 	/* Write address to IRAM_RD_ADDR and read from DATA register */
 	REG_WRITE(DMCU_IRAM_RD_CTRL, dmcu_version_offset);
 	dmcu->dmcu_version.interface_version = REG_READ(DMCU_IRAM_RD_DATA);
-	dmcu->dmcu_version.year = ((REG_READ(DMCU_IRAM_RD_DATA) << 8) |
+	dmcu->dmcu_version.abm_version = REG_READ(DMCU_IRAM_RD_DATA);
+	dmcu->dmcu_version.psr_version = REG_READ(DMCU_IRAM_RD_DATA);
+	dmcu->dmcu_version.build_version = ((REG_READ(DMCU_IRAM_RD_DATA) << 8) |
 						REG_READ(DMCU_IRAM_RD_DATA));
-	dmcu->dmcu_version.month = REG_READ(DMCU_IRAM_RD_DATA);
-	dmcu->dmcu_version.date = REG_READ(DMCU_IRAM_RD_DATA);
 
 	/* Disable write access to IRAM to allow dynamic sleep state */
 	REG_UPDATE_2(DMCU_RAM_ACCESS_CTRL,

drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h

@@ -39,10 +39,10 @@ enum dmcu_state {
 };
 
 struct dmcu_version {
-	unsigned int date;
-	unsigned int month;
-	unsigned int year;
 	unsigned int interface_version;
+	unsigned int abm_version;
+	unsigned int psr_version;
+	unsigned int build_version;
 };
 
 struct dmcu {

drivers/gpu/drm/amd/display/modules/power/power_helpers.c

@@ -87,11 +87,10 @@ struct iram_table_v_2 {
 
 	/* For reading PSR State directly from IRAM */
 	uint8_t psr_state;						/* 0xf0       */
-	uint8_t dmcu_interface_version;					/* 0xf1       */
-	uint8_t dmcu_date_version_year_b0;				/* 0xf2       */
-	uint8_t dmcu_date_version_year_b1;				/* 0xf3       */
-	uint8_t dmcu_date_version_month;				/* 0xf4       */
-	uint8_t dmcu_date_version_day;					/* 0xf5       */
+	uint8_t dmcu_mcp_interface_version;							/* 0xf1       */
+	uint8_t dmcu_abm_feature_version;							/* 0xf2       */
+	uint8_t dmcu_psr_feature_version;							/* 0xf3       */
+	uint16_t dmcu_version;										/* 0xf4       */
 	uint8_t dmcu_state;						/* 0xf6       */
 
 	uint16_t blRampReduction;					/* 0xf7       */